Questions tagged [fuel-injectors]
A device that meters the proper amount of fuel into an engine cylinder. It is controller by the engine control computer.
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Is common-rail unreliable by nature?
After having a common-rail diesel car with low mileage who broke 4th injector, and one year after the 1st injector, I tend to be suspicious about the system.
It features a deposit where fuel is at ...
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No voltage on injector lines following engine rebuild
I have a 2012 Ford Fiesta 1.4 L TDCi.
It was starting normally but the engine had major mechanical problems so I have rebuilt it and put it back in without touching any electrical part. Now I'm ...
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Bad fuel efficiency and suspected sticky / dirty injectors
The fuel efficiency on my 99 Nissan Almera 1.6L MTX has always been a bit below what I would expect, and the idle has gotten a bit rough lately, so I started poking around with a scope to see what I ...
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Best practice for replacing fuel injector o-ring?
Never worked on fuel side o a car so have a few concerns:
What's best way to relieve fuel pressure?
After swapping o-rings, does a lubricant need to be added to the o-ring to prevent damage when ...
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Wiring harness splicing - Soldering or Crimping Method
I need to rebuild the injector harness on an old vehicle using Y-splices on the wire to reduce cable usage/lengths (V12 engine).
My question now is how to to the Y-splice on the wires.
Soldering
...
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07 Camry Engine slow RPM and excessive fuel consumption reading
I have 2007 Camry manual made in Australia for Arabic gulf. The engine sometimes go to 500 rpm and suddenly stops. Or it also goes to 1500 rpm and doesn't return to 1000 rpm (which is the normal as ...
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Mixing sea foam and gumout
I have clogged fuel injectors. I used gumout in my gas tank and it's not working. Can I mix sea foam in with it?
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Looking for Fuel Injectors for a Renault Clio Expression 1.5 cdi 2006 plate
I am looking at buying a set of fuel injectors for my car but not sure of what part number I can use.
Equally can you buy a manual for car parts?
Any help would be appreciated.
Thanks in advance.
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Why have to concentrate on exhaust gas instead of inlet mixture in Indian Bikes for emission control [closed]
I am having Apache RTR 180 (carburetor version) . Having a question towards Bharat Stage (BS) (Emission Norms) against bikes.
Recently went through BS specification.
To achieve this, we are going ...
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How Carburetor/FI will handle fuel supply in high inclination angle
Lets consider, we are going in inclination. (ex:some where > x Degrees).
At this time, how carburetor will pump the fuel into the cylinder. Since of high inclination, it is very difficult for the ...
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Volvo 2.0D engine "self-oscillates" after changing timing belt and adjusting fuel-injectors
I recently had the timing belt and water pump changed on my Volvo s40 (2006 2.0D diesel). The mechanic also cleaned and adjusted the injectors. After the service I noticed that att some rpms the ...
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Do I have a fuel pressure or injector problem Part 2
This is a continuation of my previous fuel pressure / injector question.
So the missing part for my fuel pressure gauge came in and I was able to do a few more tests. The first thing I think is that ...
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Why is my car hard to start only after a few hours?
Car: Audi S5 V8 FSI, Direct Injection
I posted a question related to this but might not be the correct issue: Do injectors leak or injector seals leak?
Background
2 months ago (1200 km) I performed ...
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Do injectors leak or injector seals leak?
Car: Audi S5 2008
I have a problem in my car where sometimes my car will be hard to start after driven for a while. Normally if I floor it close to where I stop the car, it's harder to start. When I ...
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Why are my injectors different colors when they all have the same flow rate?
As can clearly be seen in the picture, the injectors on my 98 Mazda 626 2L GF are different colors:
This is even mentioned in the official Workshop Service Manual:
However, both according to the ...
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What does a good injector spray pattern look like for a four hole injector?
I have four hole injectors like this on my 98 Mazda 626 2L GF:
What does the proper spray pattern for this type of injector look like?
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1992 Ford F-250 4x4 5.8l 408ci stroker tuning questions
I have a 1992 Ford F-250 4x4 w/a 5.8l blocked 408ci stroker attached to a ZF 5 speed tranny running 3.55 gears. On the engine sits a set of 64cc chambered, 190cc intake runner, 70cc exhaust runner, 2....
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Do I have a fuel pressure or injector problem, or am I just chasing ghosts?
I just did a fuel volume test on my 98 Mazda 626 2L GF. According Tim Giles book Automotive Service:
Each injector is energized for 15 seconds... Variations of more than 5 ml calls for replacement ...
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How Long to Power the Injectors for a Fuel Pump Volume Test?
I want to do a fuel pump volume test on my 98 Mazda 62 2L GF, but the WSM doesn't say how long to energize the injectors:
I'll probably activate the injector by back probing the injector ground wire ...
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Why Ride by wire when the fuel injector is there
I feel confused on understanding this system on
1. The difference between FI and Ride by Wire
2. how it improves the fuel efficiency when compared to the ride by wire system and conventional ...
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Is 12 volts safe for testing injectors?
I'd like to do a volume test on my injectors, and was thinking that I would activate each one by jumpering it to the battery ( about 15 seconds per injector. ) The thing is that if I understand ...
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Do you need to replace injector seals if they are removed from the intake?
Car is a Audi S5 2008, direct injection, 8 cyl.
I will be removing the intake manifold to clean the intake ports of carbon. In the process, the fuel rail needs to be removed. The injectors aren't ...
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Why isn't injection managed to use the entire intake stroke?
As far as i know, electronic fuel injectors only know two discrete states, on or off. Under light load (ie. low rpm and throttle) the injector doesn't have to deliver much fuel. So naturally the ...
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Why do injector prices vary so vastly?
I'm gathering components for my setup, and at the moment I'm looking for injectors.
Those things go from $8 at AliExpress to $150+ per piece at the "genuine stealership".
One thing really ...
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How to determine injector size for custom engine?
I've got a 2.5 L engine here for which I do not know the performance specs (yet), because it's customized.
I need to select injectors for this build, but there seems to be only one equation on the ...
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Fuel Consumption high
I currently owned a Toyota KDH200. Manfactured year 2006. The Engine is 2KD (2490 cc). (Fuel Type : Diesel)
I had an issue with fuel Consumption so I went to a mechanic. He scanned the vehicle (he ...
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How does a cobra alarm system disable starting
I have a 1998 Mazda 626 with a cobra Auto security system. I suspect some problems I have been having are related to this system and was wondering exactly how it disables starting. Specifically one ...
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What sort of maintenance do GDI injectors need?
The 2014 Lexus IS350 reminds the driver that "injector maintenance" is required every 10,000 km.
Besides this advisory annoyance, as far I can tell there is no difference in drivability.
I don't ...
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Can Getting Fuel Injectors or Ignition Coils Wet Ruin Them?
I have a 2005 Suzuki Forenza Wagon where I recently cleaned the engine compartment. I was a little careless during the cleaning and water got in under the spark plug wires to sit around the top of the ...
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Fuel injection modification for increased displacement
I am working on a 2 cylinder, 250 cc motorcycle which I am increasing the displacement to about 350 cc but I have no way of remapping the ECU. Is it possible to get a satisfactory result by changing ...
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How to fix an injector leaking into the manifold?
I suspect I have an EFI common rail injector that fails to hold pressure and slowly leaks petrol into the manifold when the engine is shut down (and possibly while running). I am interested in why ...
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How can vehicles run on E?
Sorry if this topic is too open ended I'm new to this site. I am studying engines and how they work and I keep wondering, how do cars with no gas still manage to run for a few extra miles?
If you ...
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What fuel injectors I have to install? [duplicate]
Recently the fuel injectors of my Mazda 3 SP5 2006 2.3L stop working, they still works, but my mechanic said that are in bad conditions. Anyway, when I search the fuel injectors for my car, I found ...
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Difference between fuel injectors and emissions standards
I have a 2004 Honda Accord EX Sedan with a 2.4L I-4 with California emissions and 250k miles on it. I desperately need to replace my fuel injectors but the price is steep!
Can someone explain to me ...
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Fault code 27 with engine light on '94 Jeep Cherokee
I own a '94 jeep cherokee 4.0 liter. The 27 code indicates the injector circuit is not syncing with the input signal. How do I trouble shoot this?
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Ford Tractor 5600
This is a older tractor. My question relates to the fuel system. The older fuel injectors don't have any external seals? All of them seat and 3 don't leak but one does.
I was looking for a seal but ...
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RPM drop when coming to a stop in neutral, Civic 06
Let's say I'm getting off the freeway, I press the clutch, shift out of 5th to neutral. At that moment my Civic DX would usually drop to about 1000 rpm at idle. For the past month it drops too low, ...
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Do I need to eliminate old gas before changing fuel injectors?
I have a truck with a full tank of gas (12-16 gallons?) that's been sitting for 12 months and I'm about to change the fuel injectors.
The truck can barely make it around the block due to stalling out ...
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Are low-impedance fuel injectors just a placebo?
From this Hot Rod article, I understand that low-impedance injectors run higher current and open and close faster than high-impedance equivalents. The heating effect of the higher current also results ...
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